List of practice Questions

Number of neutrons in $C^{12}$ and $ C^{14} \, are $
The temperature of a body is increased from $-73^{\circ}\,C$ to $327\,^{\circ}\,C$. Then the ratio of emissive power is
Two identical cells each of emf E and internal resistance r are connected in parallel with an external resistance R. To get maximum power developed across R, the value of R is
In a closed organ pipe, the first resonance occurs at $50\, cm$. At what length of pipe, the second resonance will occur?
Which shows radioactivity?
An object is placed at a distance of $40\, cm$ in front of a concave mirror of focal length $20\, cm$. The nature of image is
An AC voltage is applied to a pure inductor $L$, drives a current in the inductor. The current in the inductor would be
Chlorobenzene is ...... reactive than benzene towards electrophilic substitution and directs the incoming electrophile to the ...... position.
Which of the following reactions involves carbon-carbon bond formation?
Two ice cubes are pressed over each other until they unite to form one block. Which one of the following forces dominates for holding them together ?
Which of the following does not act as a neurotransmitter?
A sewage treatment process in which a part of decomposer bacteria present in the waste is recycled into the starting of the process is called
A kingdom common to unicellular animals and plants is
An example for symbiotic bacteria
Nichrome or Manganin is widely used in wire bound standard resistors because of their
T-lymphocyte is produced in
Number of nitrogenous bases in a codon is
In which stage of cell division chromosomes are most condensed?
A character which is expressed in a hybrid is called
The genetic material of rabies virus is
$\left[F e(C N)_{6}\right]^{3-}-$ ion is
Which of the following hybridisations has planar geometry?
Which of the following compounds of chlorine contains both ionic and covalent bonds?
Which among the following is not a borane?
Order of reactivity towards nucleophilic substitution reaction of the compounds is